{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb994fa25c0590ad38c34a0e90e568e1655aaf144aee1ae37782d17df28df5802",
    "signature": "0x4f0f25eaaa6ac2080a46470b211695a46efba5f14635f8c9534409cb37800d2e71a846b68809ee40f75ef375b26f5db4f6f2495d6f94273bdf0a80e8b1a57c9f1b",
    "signer": "0x48ceF8d4DF97f8A1e52bF4FD47B932A269D37010",
    "userId": "325012064"
  }
}